Observations of my school

So far I've noticed the following things about the students at *********.

1. People are relatively young.
2. People seem taller/bigger than usual.
3. People seem to be in better physical shape.
4. People tend to be better looking/more concerned about their appearance.
5. People tend to dress extremely 'preppy'.

#2 intrigues me the most. Is there some reason why law students would be taller than an average non-law student?